7140SA55J8

Overview

The Renesas Electronics Corporation 7140SA55J8 is a dual-port, asynchronous static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 8K bits organized as 1K words by 8 bits. The device features a parallel interface with a maximum access time and write cycle time of 55 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 52-PLCC package measuring 19.13x19.13 mm. The component is rated for an operating temperature range of 0°C to 70°C.

Feature Summary

• Supports simultaneous independent read/write operations on two separate ports
• Utilizes CMOS technology for low power consumption
• Provides high-speed data transfer via parallel interface

Applications

• High-performance embedded systems requiring fast data buffering
• Network equipment cache memory applications
• Industrial control systems needing reliable volatile storage

Procurement Notes

Verify the exact suffix J8 confirms the 52-PLCC package and 55ns speed grade. Confirm RoHS compliance status as historical data indicates non-compliance. Check current lifecycle status as the product may be discontinued or subject to last-time buy restrictions. Ensure supplier documentation matches the Renesas official datasheet specifications.

Selection Notes

Select this component when dual-port functionality is required for concurrent host and peripheral access. Compare against the 7140SA55P variant if through-hole mounting is preferred instead of surface mount. Consider the 7130SA55J8 if lower 8K-bit density is sufficient for the design requirements. Verify voltage compatibility with the 4.5V to 5.5V operational range.

Part Context

This part belongs to the 7140SA family of dual-port SRAMs from Renesas. It shares architectural similarities with other members like the 7140SA55P but differs in packaging and pin configuration. The family is designed for applications requiring independent port access without bus contention.

FAQ

What is the memory organization of the 7140SA55J8?

The memory is organized as 1K words by 8 bits, totaling 8K bits.

Does this IC support simultaneous access?

Yes, it is a dual-port SRAM allowing independent read and write operations on both ports simultaneously.